Nielsen's 10 usability heuristics

Nielsen's 10 usability heuristics are broad rules of thumb for interface design, published by Jakob Nielsen in 1994. Teams use them to run a heuristic evaluation: reviewing a screen against each rule to find usability problems before testing with users.

The core ideas

The main points of Nielsen's 10 usability heuristics:

  • Visibility of system status: keep people informed with timely feedback
  • Match between the system and the real world: use familiar words and concepts
  • User control and freedom: offer clear undo, cancel and exit paths
  • Consistency and standards: follow platform and product conventions
  • Error prevention: remove error-prone conditions or confirm risky actions
  • Recognition rather than recall: keep options and information visible
  • Flexibility and efficiency of use: shortcuts for experienced users
  • Aesthetic and minimalist design: remove information that competes with the task
  • Help users recognise, diagnose and recover from errors: plain-language error messages with a fix
  • Help and documentation: easy to search, focused on the task

How to apply it to your product

Review one screen or flow at a time. For each heuristic, note where the design breaks it, rate the severity and propose a concrete fix. Several evaluators working independently find more problems than one.

Check your designs with Fleck

Fleck's UX Audit reviews a screen or live URL for usability, accessibility and visual hierarchy problems and returns specific fixes you can apply in the same project.

Common mistakes

  • Treating the heuristics as a checklist score instead of a way to find specific problems
  • Reporting a violation without a severity or a suggested fix
  • Replacing usability testing with a heuristic review instead of using both

سوالات متداول

Are Nielsen's heuristics still relevant?

Yes. They describe general interaction principles rather than specific technology, so they apply to web, mobile and AI interfaces alike.

How many evaluators do I need?

Nielsen Norman Group recommends three to five evaluators, since each person tends to find different problems.